Tools menu select Assemble and Link 32-bit Program

Tools menu select Assemble and Link 32-bit Program. Alternatively, you may press F9. This command should work if ConTEXT was configured properly. This will execute the make32.bat batch command that assemble and link the welcome.asm program. You can also start the 32-bit Windows Debugger from the Tools menu, or by pressing the F10 key.